Switch.



Patented Mar. 9, 1909.

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NDHFUS PETERS. INC LITHO.. WASHINGL.

UNITED' STATES PATENT OFFICE.

oaR'L n. -ROLFE AND CARL F. `ROX, OR ROCHESTER, 'NEW YoRnfAssiGNoRs Tocuis. A.

ROLRnoF REDLANDS, CALIFORNIA. f i i SWITCH..

CARL D. ROLFE and CARL F. FOX, citizens of the United States, andlresidents of Rochester, inthecounty of Monroe and State ofNew York,havelinvented a new and Improved Switch, of which the following is aspeciication. y f i This invention relates to switches such as may beused vin controllin primary andsecondary circuits in automo ile lightingapparatus. i

Be it known that We,

l An essential feature of our invention coin'- prises a switch soconstructed as to its coperatmg parts and provided lwith such connec-Itions that for the normal position of the switch all circuitscontrolled thereby are open and the cooperating parts Oi' the switch areso arranged that it is impossible to secure an improper sequence ofevents in the Opening and closing of the primary and secondary circuitsof the igniting' apparatus, while at the same time Ipermitting ignitionof either one of two lamps i independently ot the other and preventingthe ignition of the other lamp except when the switch is actuatedespeciallyT for that purpose, that is, either lamp may be ignitedindividually and during suoli operation the ignition of the otherlamp isprevented.

The accompanying drawings illustrating our invention are as followsFigurel 1 shows our switch in plan view and in this iigure there is alsoshown in diagram the circuit connectionsfor the several parts of thelighting apparatus of an automobile and also two of our burners properlyconnected up in circuit and also iii one lamp circuit one of thevdetachable connectors made use of in making such. connectionswherebyeither lamp maybe readily cut out of circuit for the purposes ofcleaning, repairing, etc.

Similar characters refer to similar parts throughout all of thedrawings.

i VReferring tothe drawings,-P and'Pl` are the primary and secondaryrespectively ot an induction coil adapted to use for igniting the lamps.I Q! l B is the .batteryconnected by wire L to the iece il, of the usualconstruction, the right iiand contact of which is connected by wire' 2to one end of the primary P, from the vother end of which wire 5 leadsunder the screw s, threaded ing block V, which may be of liber, andconthe automaticl break-` to and is securedy into thc iiisulat PatentedMatth 9, 1909-.

tacting with the connecting member of the U-shaped spring v, which isseated and thus held in asuitable slot therefor in the block V.ThebatteryB is connected lby wire 3v to the screw s1 engaging the middlemember oi.y the U-shaped lspring u which is also similarly seated andheld in al suitable s lot therefor in the block V. l l

spring u when the switch is actuated in the 'manner to be explained. his the blade of the sulatinfT handle H, and von the Vend of blade issecured an insulating disk o,

switch having the inthe right or left hand member of the contact springo as the switch handle vH is moved respectively to the left or to theright.

r is the ivotal point of the switch blade `h and a are e engaged by thelade h as the switch handle is o erated,l such engagement always takingp ace prior to the closing of the circuit of the primary P of theinduction coil by the contacting of the right or left hand members ofthe springs 'u and 'u actuated by the disk o on the switch blade h. Thearrangement'of the parts, as willlat reference to the drawings, issuchthat the blade'h contacts with one ofthe springs a, prior to the closingof the rimary circuit, bythe actuation of the han le H, and when suchhandle is releasedvthe springs o tend yto assume the positions shownforcing theblade h out of contact with either of the springsc, but,however, not until the primary circuit has iirst been Opened by an armof the spring o moving away from the corresponding :arml of theI -springu., which it has been made to` contact. positions which the parts H, oand/u assume at the time when the blade'h contacts with the right handsprin 0, is indicated respectivelyat H1, h1, o1 an o,while the resective positions which suchparts assum 1 w en the the motion of the freeends ofthe arms of the the edge of which is'adapted to engage either thein full lines,

The springs u and o are tlnis A held in place and also .connected intheir ed s ring contacts adapted to bel once be understood by handle Hhas been moved to the righi far enough to cause the left hand member ol'the spring o to contact `with the corresponding member of the spring Au,are indicated at iig, h2, o2 and v2. The handle l-l may be forced stillfurther to the right or to the left until the left or right hand memberrespectively of the spring u contacts with the corresponding boss c.Upon releasing the handle H, the action of the springs 'v returns theswitch elements to the positions indicated in full lines. The pivotalpoint r of the sn itch blade h is connected by wire 8 with one endcfg-the secondary P1, the other end of which is connected by Wire 6 tothe supply pipe X for the burners C, with which the sparking terminals eof the right and left hand burners C are of course in electricalconnection, while the sparking terminals i of the right hand yburner Cis connected by wire 4 with the right hand spring contact a andsimilarly the sparking terminal 'i of the left hand burner C isconnected by wire 7 with the left hand spring contact a. A

In the Wire 7 there is seen a detachable connector, the construction ofwhich we will now ex lain. i

p an p1 are metallic plugs threaded into the separable insulatingsections d and d1. Within the section d1 there is also threaded the plugd3, the right hand half of which is reduced in size but carries anenlarged head on its outer end and this plug d3 is split, as indicated,throughout the greater portion of its len th; there is similarlythreaded into the rigt hand insulatin section d1 a socket member d2havingan e arged recess adapted to receive the enlarged end of the splitplug d3. The construction of the parts just described, as will at oncebe understood, tends to hold such parts in the operative ositions shownin the drawings when once orced to such positions, causing the outer endof the split plug d to yield in entering the restricted portion of thesocket d2.

Each burner C has a bifurcated and integrally formed tip c of lava withthe usual cross sha ed openings therein connecting directl with the boreof the main stem portion o the burner C, to which it may be secured inany suitable way well known in the art. 1

The operation of our lighting apparatus is as follows The circuitconnections' are made, as indicated, and upon turning on the sup ly ofacetylene gas, the same is ignited at t e right and left hand burners Cby movin the switch handle H to the left and to the rig t respectively,energizing `irst the primary P, the circuit of which is through theautomatic interrupter J while the circuit of the secondary PI is throughthe sparklng gap between the sparking'terminals t and e of the right andleft hand burners We prefer, in connecting our swltch with the lamp ofan automobile, to make use of a detachable connector of the style shownin the drawings, in which the section d1 of the insulating sheath isexterior-ly threaded, as seen, to receive vthe nuts y', by means ofwhich the section d1 may be rigidly secured to a llange or othersuitable part of the lamp as t 1n order that any strain `which may comeu )on the parts in separating the connector, w iether intentionally orby accident, may be sustained by a rigid part of the lamp rather than bythe connection between such connector 7 and the tip c of the burner Cand by such tip. The part of the connector d1 being lattached to thelamp, there is no strain exerted upon the connector 7 leading therefromto the sparking electrode f1', of the burner, and thus a tendency toeither break the lava tip of the burner or to distort the yielding orelastic portion of the connector 7 at the tip of the burner is avoided.

Attention is called to the following points: Either lamp may be ignitedindependently of the other,-either lamp may be ignited iirst and theother thereafter;-the normal position of the handle H under theinfluence of the springs v is such that all the circuits ol" theigniting apparatus are normally open and they are immediately caused toassume 'such open circuit positions upon the release of the handle H,1nlighting either lamp, the secondary circuit is irst connected to thesparking terminals of such lamp andv then the primary circuit is closedand again opened before the secondary circuit is disconnected from thesparking terminals of such burner and that this sequence of events isalways maintained no matter which lamp is lighted rst or whether onelamp is li hted alone or both lamps lighted, one after t e other.

Vhat We claim is 1. In a switch mechanism, tWo insulated, springactuated and normally open contact members adapted to close a firstcircuit; a relatively fixed contact and cooperating therewith butinsulated therefrom. a swinging arm adapted to be moved to engage suchixed contact to close a second circuit and a member carried by such armadapted when such arm is moved still farther when inengagement with suchfixed contact to force such spring actuated cont-act members intoengagement with each other to close the irst circuit.

2. In a switch mechanism, two insulated, spring actuated and normallyopen contact. members adapted to close a rst circuit; a relatively xedcontact and cooperating therewith but insulated therefrom a swinging armadapted to be moved to engage such fixed contact to close a secondcircuit and a member carried by such arm adapted as such arm is movedstill` fartherwhen in engagement With such fixed contact to force suchspring actuated contact members into engagement with-each other to closethe rst circuit, suoli armeleetrieally insulated from suoli springatuated Contact members.

'3. In a switch mechanism, tuo insulated, spring actuated and normallyopen contact members adapted to close a irst circuit ;.a relativelyfixed Contact and coperating therewith but insulated therefrom aswinging arm adapted to be moved to engage such fixed contact to closea. second eu'ouit and a memj .ber carried by such arm adapted as suchIarm jis moved still farther' when in engagement

